Description: 本文提出并实现一种用于三维坐标拣选的RIP（Ray-Intersection-Penetration）方法。介绍了如何在已经渲染至窗口的三维场景中，使用鼠标或者相关设备拣选特定三维对象的方法。此方法对于正交投影或透视投影均有效，相对于OpenGL自带的选择与反馈机制，本方法无论是拣选精度还是算法实现效率均高出许多，是一种比较通用的解决方案。-this paper, and for the realization of a three-dimensional coordinates of the selected RIP (Ray-Intersecti on-penetration) method. Described how the window had been exaggerated to the three-dimensional scenes. use a mouse or related equipment selection of specific three-dimensional object methods. This method for the orthogonal projection or perspective projection is effective, relative to OpenGL to bring their own choices and feedback mechanisms, Whether this method is to select the algorithm accuracy or much higher efficiency is a more generic solution. Platform: |
Size: 40862 |
Author:wanhy |
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Description: 本文提出并实现一种用于三维坐标拣选的RIP（Ray-Intersection-Penetration）方法。介绍了如何在已经渲染至窗口的三维场景中，使用鼠标或者相关设备拣选特定三维对象的方法。此方法对于正交投影或透视投影均有效，相对于OpenGL自带的选择与反馈机制，本方法无论是拣选精度还是算法实现效率均高出许多，是一种比较通用的解决方案。-this paper, and for the realization of a three-dimensional coordinates of the selected RIP (Ray-Intersecti on-penetration) method. Described how the window had been exaggerated to the three-dimensional scenes. use a mouse or related equipment selection of specific three-dimensional object methods. This method for the orthogonal projection or perspective projection is effective, relative to OpenGL to bring their own choices and feedback mechanisms, Whether this method is to select the algorithm accuracy or much higher efficiency is a more generic solution. Platform: |
Size: 40960 |
Author:wanhy |
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Description: 提出并实现一种用于三维坐标拣选的RIP（Ray-Intersection-Penetration）方法。介绍了如何在已经渲染至窗口的三维场景中，使用鼠标或者相关设备拣选特定三维对象的方法。此方法对于正交投影或透视投影均有效，相对于OpenGL自带的选择与反馈机制，本方法无论是拣选精度还是算法实现效率均高出许多，是一种比较通用的解决方案。-Proposed and implemented for three-dimensional coordinates of a selected RIP (Ray-Intersection-Penetration) method. Introduce how to have a window of three-dimensional rendering to scene, using the mouse or related devices to choose a particular method of three-dimensional object. This method is orthogonal projection or perspective projection are effective, as opposed to OpenGL Platform: |
Size: 39936 |
Author:vcgirl |
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Description: 常用计算机图形学算法.包括射线,球,直线,与轴平行包围盒相交计算,常用矩阵运算等.-Commonly used in computer graphics algorithms. Including ray, ball, straight, with the axis parallel bounding box intersection calculations commonly used, such as matrix operations. Platform: |
Size: 4096 |
Author:songfy |
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Description: 本书是关于计算机图形学利用OPENGL进行绘图的原版英文书籍，本书详细介绍了OpenGL相关数学知识，读者通过对本书的阅读可以更清楚地知道怎样运用各类OPENGL函数，对更进一步地学习opengl有很好的理论指导。读者可以在书的preface里面找到下载该书籍相关源代码的网站地址。第一章是介绍，第二章是视图和转换（包括二维和三维）的数学基（Transformations and Viewing），第三章是光照和着色的数学基础（Lighting, Illumination, and Shading），第四章是插值法和平均法的数学概念（Averaging and Interpolation），第五章是纹理映射的数学基础（Texture Mapping），第六章是颜色的数学基础（Color），第七和第八章分别介绍了Bezier和B_splines曲线，第九章是光线追踪（Ray Tracing），第十章是Intersection Testing，第十一章是Radiosity，第十二章是关于动画以及运动学的数学知识-The book is about the use of computer graphics for mapping OPENGL original English books, this book details OpenGL related mathematical knowledge, readers of this book can be read more clearly know how to use various types of OPENGL function, for further study have opengl very good theoretical guidance Platform: |
Size: 4480000 |
Author:蒋娟芬 |
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Description: 基于光线投射变换的三维模型特征提取,以三维模型的重心为球心的最小包围球剖分成一系列同心球壳，落入每个球壳的射线与模型表面的交点定义一个球坐标方程。一般地，对于每条射线，它与模型表面的多个交点同时落入一个球壳的几率大大降低了，这样就可以尽可能的减少信息的丢失。-Transform-based ray-casting feature extraction of three-dimensional model to three-dimensional model for the core focus of the post-mortem into the smallest ball surrounded by a series of concentric spherical shell, falling into the hands of each spherical shell model of the surface-ray intersection with the definition of a spherical coordinate equation. In general, for each ray, the surface of it with the model number of intersection points falling into the hands of a spherical shell at the same time greatly reduces the probability that such a reduction could be as much as possible the loss of information. Platform: |
Size: 1310720 |
Author:周光有 |
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Description: 思路: 场景中的每个mesh关联到一个唯一的COLOR值。 Pick检测时, 将当前场景渲染到纹理, (在PS中各mesh仅用自己的关键COLOR),即刻取回当前鼠标的位置的COLOR, 查找COLOR就可以知道当前被Pick的Mesh。
使用Render To Texture 的快速Picking, 无需锁住Vertex Buffer进行三角面和射线的相交测试, 仅在读取数据的时候锁住纹理的一个相素, 但是显卡要支持Render To Texture,纹理尺寸必须支持非2的n次方，D3DFMT_A8R8G8B8 或 D3DFMT_X8R8G8B8
可以改进的地方：
1。用类封装
2。Pick可以返回指向mesh的指针
需要：
DX SDK Aug, 2006以上，VC2005 -Ever mesh in the scene has a unique color value(DWORD). Picking, render the scene to target(texture), just use the unique color( see .fx file ), retrieve the mouse position(screen space ) color at once, check the color and you will get the mesh. Picking with Render to texture, Not need lock vertex buffer to check intersection ray and triangle, within retrieving just lock one pixel. Device must support render to target、D3DFMT_A8R8G8B8 or D3DFMT_X8R8G8B8、not 2^n texture size、support shader of course.
Compile Environment:
DX SDK above Aug. , 2006 vc 2005
Thinking:
1. Use a class to encapsulate
2. Picking check return the pointer of the mesh( or reference ) Platform: |
Size: 5325824 |
Author:Jun Qian |
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Description: 一本电子书,讲述了如何快速的进行射线和地形的相交处理-1 e-books, about how fast to deal with the intersection-ray and the terrain Platform: |
Size: 14336 |
Author:石头 |
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Description: 点在多边形内判断，思想：点的做射线与多边形的交点个数。-Point in polygon judge thought: point to do ray intersection and the number of polygons. Platform: |
Size: 1024 |
Author:青台 |
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Description: 光线跟踪软件，它包含处理几何对象类，射线追踪和确定与几何对象射线的交点。可能需要修改，使之适合您的应用程序。主要的工作区文件是RayTraceKd / RayTraceKd.sln。 (作者：Sam Buss) -Ray-tracing software, which includes dealing with geometric object classes, ray tracing and identification of an object-ray intersection geometry. May need to modify to suit your application. The main workspace file is RayTraceKd/RayTraceKd.sln. (Author: Sam Buss) Platform: |
Size: 3868672 |
Author:zhang |
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Description: ray-tracing光线跟踪算法的实现。包括了光线求交、追踪，物体材质、色彩的设置，球面和墙面的镜面反射效果。场景包括地板，三个镜面反射的球体，一个漫反射球体和一面镜面反射的墙壁。工程运行于VS2008环境，需要OpenGL支持。Release目下exe文件可以直接双击运行查看结果(需要glut32.dll动态链接库的支持)。-ray-tracing ray tracing algorithm. Includes light intersection, tracking, object material, color settings, spherical and wall mirror reflection effect. Scenarios, including the floor, three mirror reflection of the sphere, a sphere and diffuse specular side walls. This project runs under VS2008 with OpenCV. Double click the exe file under Debug folder to check the final result. (requires glut32.dll support). Platform: |
Size: 1469440 |
Author: |
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Description: Ray Casting
visible surfaces of objects are found by throwing (or casting) rays of light from the viewer into the scene
Ray Tracing
Extension to Ray casting
Recursively cast rays from the points of intersection
Platform: |
Size: 1412096 |
Author:homa |
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Description: README: rayBoxIntersection
Ray/box intersection using Smits algorithm (1999)
The zip file includes one example of intersection.
Author:
Jes√∫s Mena
References:
[1] "Efficiency issues for ray tracing".
B. Smits.
Journal of Graphics Tools, 3(2):1‚ Ä ì14, 1998.
[2] "An efficient and robust ray-box intersection algorithm"
A. Williams, S. Barrus, and R.K. Morley and P. Shirley.
Journal of Graphics, GPU, & Game Tools, 10(1):45-60, 2005.
[3] Other algorithms:
http://www.realtimerendering.com/intersections.html
Keyword:
ray, box, intersection, ray tracing, render, computer graphics
http://www.mathworks.com/matlabcentral/fileexchange/26834-raybox-intersection-README: rayBoxIntersection
Ray/box intersection using Smits algorithm (1999)
The zip file includes one example of intersection.
Author:
Jes√∫s Mena
References:
[1] "Efficiency issues for ray tracing".
B. Smits.
Journal of Graphics Tools, 3(2):1‚ Ä ì14, 1998.
[2] "An efficient and robust ray-box intersection algorithm"
A. Williams, S. Barrus, and R.K. Morley and P. Shirley.
Journal of Graphics, GPU, & Game Tools, 10(1):45-60, 2005.
[3] Other algorithms:
http://www.realtimerendering.com/intersections.html
Keyword:
ray, box, intersection, ray tracing, render, computer graphics
http://www.mathworks.com/matlabcentral/fileexchange/26834-raybox-intersection Platform: |
Size: 30720 |
Author:steven wen |
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Description: 一个功能比较全的光线追踪程序,包含了镜面,三角形和球的求交.-A program of ray tracer, which include specular layer, the intersection of triangle and ball. Platform: |
Size: 4041728 |
Author:shenzhe |
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Search - ray intersection